000 B000000 10/31/2005 000 C000000 0000880161 000 D000000 N 000 E000000 NF 000 F000000 Y 000 G000000 Y 000 H000000 N 000 I000000 6.1 000 J000000 B 001 A000000 MORGAN STANLEY INSURED MUNICIPAL TRUST 001 B000000 811-06434 001 C000000 2127625260 002 A000000 1221 AVENUE OF THE AMERICAS 002 B000000 NEW YORK 002 C000000 NY 002 D010000 10020 003 000000 N 004 000000 N 005 000000 N 006 000000 N 007 A000000 N 007 B000000 0 008 A000001 MORGAN STANLEY INVESTMENT ADVISORS INC. 008 B000001 A 008 C000001 801-42061 008 D010001 NEW YORK 008 D020001 NY 008 D030001 10020 010 A000001 MORGAN STANLEY SERVICES COMPANY, INC. 010 C010001 JERSEY CITY 010 C020001 NJ 010 C030001 17311 012 A000001 MORGAN STANLEY TRUST 012 B000001 84-5710 012 C010001 JERSEY CITY 012 C020001 NJ 012 C030001 07311 013 A000001 DELOITTE & TOUCHE LLP 013 B010001 NEW YORK 013 B020001 NY 013 B030001 10281 014 A000001 ARAB MALAYSIA SECURITIES 014 B000001 8-00000 014 A000002 CHINA INTERNATIONAL CAPITAL CORPORATION LTD 014 B000002 8-00000 014 A000003 HC SECURITIES 014 B000003 8-00000 014 A000004 JM MS FIXED INCOME SECURITIES PRIVATE LIMITED 014 B000004 8-00000 014 A000005 JM MORGAN STANLEY PRIVATE LIMITED 014 B000005 8-00000 014 A000006 JM MORGAN STANLEY SECURITIES PRIVATE LIMITED 014 B000006 8-00000 014 A000007 JM MS RETAIL SERVICES PRIVATE LIMITED 014 B000007 8-00000 014 A000008 MORGAN STANLEY & CO. INCORPORATED 014 B000008 8-15869 014 A000009 MORGAN STANLEY & CO. LIMITED 014 B000009 8-00000 014 A000010 MORGAN STANLEY ASIA LIMITED 014 B000010 8-00000 014 A000011 MORGAN STANLEY CANADA LIMITED 014 B000011 8-00000 014 A000012 MORGAN STANLEY QUILTER LIMITED 014 B000012 8-00000 014 A000013 MS DEAN WITTER AUSTRALIA SECURITIES LIMITED 014 B000013 8-00000 014 A000014 MORGAN STANLEY JAPAN LIMITED 014 B000014 8-00000 014 A000015 VAN KAMPEN FUNDS 014 B000015 8-19412 014 A000016 MORGAN STANLEY, S.V., S.A. 014 B000016 8-00000 014 A000017 MORGAN STANLEY DW INC. 014 B000017 8-14172 014 A000018 MORGAN STANLEY INTERNATIONAL LIMITED 014 B000018 8-00000 014 A000019 MORGAN STANLEY SECURITIES LIMITED 014 B000019 8-00000 014 A000020 MORGAN STANLEY BANK AG 014 B000020 8-00000 014 A000021 MORGAN STANLEY DISTRIBUTION INC. 014 B000021 8-44766 014 A000022 MORGAN STANLEY DISTRIBUTORS INC. 014 B000022 8-45262 014 A000023 MORGAN STANLEY MARKET PRODUCTS INC. 014 B000023 8-37795 014 A000024 MS SECURITIES SERVICES INC. 014 B000024 8-26804 014 A000025 PRIME DEALER SERVICES CORP. 014 B000025 8-47025 015 A000001 THE BANK OF NEW YORK 015 B000001 C 015 C010001 NEW YORK 015 C020001 NY 015 C030001 10286 015 E010001 X 018 000000 Y 019 A000000 Y 019 B000000 107 019 C000000 MORGANSTAN 020 A000001 GOLDMAN,SACHS & CO. 020 B000001 13-5108880 020 C000001 14 020 C000002 0 020 C000003 0 020 C000004 0 020 C000005 0 020 C000006 0 020 C000007 0 020 C000008 0 020 C000009 0 020 C000010 0 021 000000 14 022 A000001 MERRILL LYNCH, PIERCE, FENNER & SMITH INC. 022 B000001 13-5674085 022 C000001 45406 022 D000001 41396 022 A000002 JP MORGAN CHASE & CO. 022 B000002 13-3224016 022 C000002 27895 022 D000002 29449 022 A000003 UBS FINANCIAL SERVICES INC. 022 B000003 13-3873456 022 C000003 13962 022 D000003 9511 022 A000004 EDWARDS (A.G.) & SONS, INC. 022 B000004 43-0895447 022 C000004 3600 022 D000004 8928 022 A000005 BEAR, STERNS & CO. INC. 022 B000005 11-2418191 022 C000005 6275 022 D000005 5564 022 A000006 CITIGROUP GLOBAL MARKETS, INC. 022 B000006 11-2418191 022 C000006 5919 022 D000006 5512 022 A000007 DAIN RAUSCHER INC. 022 B000007 41-1416330 022 C000007 2147 022 D000007 7762 022 A000008 ADVEST, INC. 022 B000008 06-0950348 022 C000008 0 022 D000008 9821 022 A000009 LEGG MASON WOOD WALKER, INC. 022 B000009 52-0902557 022 C000009 4470 022 D000009 1052 022 A000010 FIDELITY CAPITAL MARKETS 022 B000010 04-2653569 022 C000010 0 022 D000010 5460 023 C000000 132316 023 D000000 135056 024 000000 N 026 A000000 N 026 B000000 Y 026 C000000 N 026 D000000 Y 026 E000000 N 026 F000000 Y 026 G010000 N 026 G020000 N 026 H000000 N 027 000000 N 045 000000 Y 046 000000 N 047 000000 Y 048 000000 0.270 048 A010000 0 048 A020000 0.000 048 B010000 0 048 B020000 0.000 048 C010000 0 048 C020000 0.000 048 D010000 0 048 D020000 0.000 048 E010000 0 048 E020000 0.000 048 F010000 0 048 F020000 0.000 048 G010000 0 048 G020000 0.000 048 H010000 0 048 H020000 0.000 048 I010000 0 048 I020000 0.000 048 J010000 0 048 J020000 0.000 048 K010000 0 048 K020000 0.000 049 000000 N 050 000000 N 051 000000 N 052 000000 N 053 A000000 N 054 A000000 Y 054 B000000 Y 054 C000000 Y 054 D000000 N 054 E000000 N 054 F000000 N 054 G000000 Y 054 H000000 Y 054 I000000 N 054 J000000 Y 054 K000000 N 054 L000000 Y 054 M000000 Y 054 N000000 N 054 O000000 Y 055 A000000 N 055 B000000 N 056 000000 Y 057 000000 N 058 A000000 N 059 000000 Y 060 A000000 Y 060 B000000 Y 061 000000 0 062 A000000 Y 062 B000000 0.0 062 C000000 0.0 062 D000000 0.0 062 E000000 6.6 062 F000000 0.0 062 G000000 0.0 062 H000000 0.0 062 I000000 0.0 062 J000000 0.0 062 K000000 0.0 062 L000000 0.0 062 M000000 0.0 062 N000000 0.0 062 O000000 137.7 062 P000000 0.0 062 Q000000 0.0 062 R000000 0.0 063 A000000 0 063 B000000 18.2 064 A000000 Y 064 B000000 N 066 A000000 N 067 000000 N 068 A000000 N 068 B000000 N 069 000000 N 070 A010000 Y 070 A020000 N 070 B010000 N 070 B020000 N 070 C010000 Y 070 C020000 N 070 D010000 N 070 D020000 N 070 E010000 Y 070 E020000 Y 070 F010000 N 070 F020000 N 070 G010000 Y 070 G020000 N 070 H010000 N 070 H020000 N 070 I010000 N 070 I020000 N 070 J010000 Y 070 J020000 Y 070 K010000 Y 070 K020000 N 070 L010000 N 070 L020000 N 070 M010000 N 070 M020000 N 070 N010000 Y 070 N020000 N 070 O010000 Y 070 O020000 N 070 P010000 Y 070 P020000 N 070 Q010000 N 070 Q020000 N 070 R010000 N 070 R020000 N 071 A000000 59416 071 B000000 67557 071 C000000 412453 071 D000000 14 072 A000000 12 072 B000000 20564 072 C000000 0 072 D000000 0 072 E000000 0 072 F000000 1145 072 G000000 339 072 H000000 0 072 I000000 89 072 J000000 19 072 K000000 0 072 L000000 70 072 M000000 12 072 N000000 17 072 O000000 0 072 P000000 0 072 Q000000 0 072 R000000 43 072 S000000 32 072 T000000 0 072 U000000 0 072 V000000 0 072 W000000 532 072 X000000 2298 072 Y000000 0 072 Z000000 18266 072AA000000 4638 072BB000000 1071 072CC010000 0 072CC020000 10205 072DD010000 17887 072DD020000 0 072EE000000 0 073 A010000 0.8100 073 A020000 0.0000 073 B000000 0.0000 073 C000000 0.0000 074 A000000 18 074 B000000 0 074 C000000 18738 074 D000000 388994 074 E000000 0 074 F000000 0 074 G000000 0 074 H000000 0 074 I000000 0 074 J000000 0 074 K000000 0 074 L000000 6161 074 M000000 60 074 N000000 413971 074 O000000 1030 074 P000000 136 074 Q000000 0 074 R010000 0 074 R020000 0 074 R030000 0 074 R040000 283 074 S000000 130051 074 T000000 282471 074 U010000 282471 074 U020000 0 074 V010000 15.23 074 V020000 0.00 074 W000000 0.0000 074 X000000 2585 074 Y000000 325 075 A000000 0 075 B000000 292916 076 000000 13.60 077 A000000 Y 077 B000000 Y 077 C000000 N 077 D000000 N 077 E000000 N 077 F000000 N 077 G000000 N 077 H000000 N 077 I000000 N 077 J000000 N 077 K000000 N 077 L000000 N 077 M000000 N 077 N000000 N 077 O000000 Y 077 P000000 N 077 Q010000 N 077 Q020000 N 077 Q030000 N 078 000000 N 080 A000000 ICI MUTUAL INSURANCE COMPANY 080 B000000 GULF, ZURICH, FIDELITY AND DEPOSIT AT AL. 080 C000000 150000 081 A000000 Y 081 B000000 106 082 A000000 N 082 B000000 0 083 A000000 N 083 B000000 0 084 A000000 N 084 B000000 0 085 A000000 Y 085 B000000 N 086 A010000 0 086 A020000 0 086 B010000 841 086 B020000 11600 086 C010000 0 086 C020000 0 086 D010000 0 086 D020000 0 086 E010000 0 086 E020000 0 086 F010000 0 086 F020000 0 087 A010000 SHARES OF BENEFICIAL INTEREST 087 A020000 61745P866 087 A030000 IMT 088 A000000 N 088 B000000 N 088 C000000 N 088 D000000 Y SIGNATURE Sonya Martirosyan TITLE